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Finding the Fourth Proportional to 580,080.60, 870,120.90 and 572,207.40

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Solution

The fourth proportional to 580,080.60, 870,120.90 and 572,207.40 is: 858,311.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,080.60 : 870,120.90 = 572,207.40 : x
  2. Step 2: Convert to fraction form
    580,080.60/870,120.90 = 572,207.40/x
  3. Step 3: Cross multiply
    580,080.60x = 870,120.90 × 572,207.40
  4. Step 4: Simplify right side
    580,080.60x = 497,889,617,874.66
  5. Step 5: Solve for x
    x = 497,889,617,874.66/580,080.60
  6. Step 6: Final answer
    x = 858,311.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.